Synthesis and Characterization of H-LnBO3 Orthoborates (Ln=La, Nd, Sm, and Eu)

• Published in: Journal of solid state chemistry Vol. 148; no. 2; pp. 229 - 235
• Main Authors: Lemanceau, S., Bertrand-Chadeyron, G., Mahiou, R., El-Ghozzi, M., Cousseins, J.C., Conflant, P., Vannier, R.N.
• Format: Journal Article
• Language: English
• Published: San Diego, CA Elsevier Inc 01.12.1999; Elsevier
• Subjects: Condensed matter: structure, mechanical and thermal properties; europium; Exact sciences and technology; H-LnBO3; HTXRD; Inorganic compounds; luminescence; orthoborates; Physics; rare earths; Salts; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; synthesis; synthesis; HTXRD; H-LnBO3; luminescence; europium; orthoborates; rare earths; Europium Borates; Temperature dependence; Neodymium Borates; Inorganic compounds; Crystal form; Stability; Lanthanum Borates; Ternary compounds; Doping; Luminescence; Samarium Borates; XRD; High temperature; Ionic radius; Infrared spectra; Rare earth compounds; Experimental study; Europium additions; Wet process; Chemical preparation; Solid state reaction; Fabrication structure relation; Comparative study; Crystal structure
• ISSN: 0022-4596; 1095-726X
• DOI: 10.1006/jssc.1999.8437

Depending on the ionic radius of the rare earth ions, orthoborates exhibit three different crystalline forms noted LnBO3 and H-LnBO3. A comparative study of the stability relationship of H-LnBO3 borate (Ln=La, Nd, Sm, and Eu) versus the temperature and synthesis method (solid state reaction and wet process) is reported. These high temperature forms have been characterized by X-ray diffraction, high temperature X-ray diffraction, and IR spectroscopy. This work was completed by a study of luminescence properties of H-LaBO3 orthoborate doped by Eu3+.